WO2000030824A2 - Procede pour produire des pieces moulees par injection dans une machine de moulage par injection - Google Patents

Procede pour produire des pieces moulees par injection dans une machine de moulage par injection Download PDF

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Publication number
WO2000030824A2
WO2000030824A2 PCT/EP1999/008912 EP9908912W WO0030824A2 WO 2000030824 A2 WO2000030824 A2 WO 2000030824A2 EP 9908912 W EP9908912 W EP 9908912W WO 0030824 A2 WO0030824 A2 WO 0030824A2
Authority
WO
WIPO (PCT)
Prior art keywords
melt
hot runner
tool
mold
runner plate
Prior art date
Application number
PCT/EP1999/008912
Other languages
German (de)
English (en)
Other versions
WO2000030824A3 (fr
Inventor
Eric Schieberl
Original Assignee
Krauss-Maffei Kunststofftechnik Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krauss-Maffei Kunststofftechnik Gmbh filed Critical Krauss-Maffei Kunststofftechnik Gmbh
Priority to AT99958085T priority Critical patent/ATE237445T1/de
Priority to EP99958085A priority patent/EP1131196B1/fr
Priority to DE59905105T priority patent/DE59905105D1/de
Priority to CA002351424A priority patent/CA2351424A1/fr
Publication of WO2000030824A2 publication Critical patent/WO2000030824A2/fr
Publication of WO2000030824A3 publication Critical patent/WO2000030824A3/fr
Priority to US09/855,260 priority patent/US6641770B2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/042—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • B29C31/044—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds with moving heads for distributing liquid or viscous material into the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds

Definitions

  • the invention relates to a method for producing injection molded parts in an injection molding machine according to the preamble of claim 1 and an apparatus for performing the method
  • a device of this type is known from EP 0 658 410 A2, in which the melt is brought onto the upper mold half of a mold half via a hot runner system which is integrated in a mold half.
  • the other mold half is initially at a distance from the first mold half and becomes Then, after the mold surface of the first tool half has been largely covered with melt, the first tool half is moved to the closed position.
  • the melt is pressed in a stamping process into all areas of the tool cavity.
  • This manufacturing process known as the source flow process, is particularly suitable for the precise manufacture of large-area injection molded parts.
  • melt opening openings are formed in the form of so-called sprue markings in the subsequent stamping process.
  • sprue markings are not acceptable, in particular in the case of optical articles, such as, for example, plastic windows for motor vehicles
  • the invention is therefore based on the object of specifying a method and a device by means of which sprue markings can be avoided on the finished injection molded part, taking advantage of the abovementioned source flow method
  • ERS ⁇ TZBL ⁇ TT (RULE 26)
  • the essence of the invention is that the function of the hot runner system previously integrated in a mold half, with which the melt can be largely distributed uniformly over the mold surface of the mold half via one or more outlet openings, is taken over by a separate component, the hot runner plate This is only inserted into the open tool to cover the mold surface of a preferably horizontally arranged mold half with melt. The hot runner plate is moved out before the subsequent stamping process. This division of functions allows the mold surface of the mold halves to be coated with melt to be kept free of sprue openings
  • each functional part namely the molding tool on the one hand and the hot runner plate on the other hand, can be kept at the optimum temperature for its function fulfillment
  • the hot runner plate can be equipped in any way with the required needle valve nozzles.
  • the advantage here is that a hot runner plate that is universally equipped with valve gate nozzles can be used to melt the mold surfaces of different tool halves, whereby only the control profile for the valve gate nozzles has to be changed Several different tools and a universally usable Heilauferplatte result in a cost saving
  • the hot runner plate is coupled to a tool half.
  • the mold surface of the other tool halves can be coated with melt alternately with the hot runner plate, and at the same time the finished molded part can be removed outside the closing area of the tool halves for the tool half coupled to the hot runner plate encapsulated parts, such as a frame part of an automobile window, into which movable tool halves are inserted
  • the injection molding machine can be operated if two tool halves are coupled to the hot runner plate.There is always one tool half outside of the closing range in each work cycle, i.e.
  • FIG. 1a shows the side view of a vertical injection molding machine with a retracted hot runner plate and extended movable tool halves
  • 1 b is a top view of the injection molding machine according to section line A-A in FIG
  • FIGS. 1a and 1b shows the injection molding machine according to FIGS. 1a and 1b with the hot runner plate extended and 2b and the movable tool halves retracted
  • FIG. 3 shows an injection molding machine according to FIG. 1a with two movable tool halves which are firmly coupled to the hot runner plate
  • 4a shows the side view of a vertical injection molding machine with a plasticizing unit which can be moved back and forth together with the hot runner plate
  • FIG. 4b shows the injection molding machine according to FIG. 4a, however, with the hot runner plate extended and the tool halves partially lowered
  • the injection molding machine shown schematically in FIGS. 1 a and 1 b is a two-platen injection molding machine with a fixed mold clamping plate 2, with a fixed mold half 3 and a moveable mold clamping plate 4 which is connected to the fixed mold clamping plate 2 via pulling and guiding beams 5.
  • the moveable mold clamping plate 4 carries a holding plate 6 for the second movable tool half 7, which is firmly connected to a hot runner plate 8.
  • the hot runner plate 8 has a number of needle shut-off nozzles 9 and is positioned above the mold surface 10 of the fixed tool half 3.
  • the movable tool half 7 is located outside the closing area of the Injection molding machine 1 in a position in which the finished injection molded part 11 can be removed.
  • the plasticizing unit 12 is only shown in FIG. 1b. It is shown with the nozzle 13 in the position shown in FIGS. 1a and 1b n of the hot runner plate 8 docked to the melt supply
  • the hot runner plate 8 and the movable tool half 7 are positioned in alternation with the fixed tool half 3, the hot runner plate 8 covering the mold surface 10 of the fixed tool half 3 with melt and the movable tool half 7 upon lowering the fixed tool half 3 presses the melt into all areas of the tool cavity enclosed by the two tool halves 3 and 7
  • the surface of the mold surface 10 is covered by the number of needle valve nozzles 9, which may be controlled in a cascade-like manner so that a closed melt coating results without the inclusion of optically disturbing bubbles or weld lines
  • the injection molding machine according to FIG. 3 corresponds to the injection molding machine 1 according to FIGS. 1a to 2b, but the hot runner plate 8 is instead connected to one with two movable tool halves 14 and 15. The injection molding machine can then be operated in three alternating cycles
  • the injection molding machine 21 shown in FIGS. 4a and 4b is also a two-platen injection molding machine with a fixed mold clamping plate 22, with a fixed mold half 23 and a movable mold clamping plate 24, which is connected to the fixed mold clamping plate 22 via pulling and guiding bars 25.
  • the movable mold clamping plate 24 carries a second tool half 27
  • a hot runner plate 28 is inserted, which is firmly connected to a plasticizing unit 32. In this position, the mold surface 20 of the fixed tool halves 23 is coated with melt flat.
  • the hot runner plate 28 is located outside the closing area of the injection molding machine 21 and the movable tool half 27 is on the way to the shooting position on the fixed tool half 23
  • the hot runner plate 28 can also be moved into the space between the open tool halves, cycle-wise, independently of the plasticizing unit 32 and coupled there to the plasticizing unit. After the mold surface 20 of the fixed tool halves 23 has been coated with melt, the hot runner plate 28 can then 'in the opposite direction to the plasticizing unit 32 can be moved out of the shooting area Reference list

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé pour produire des pièces moulées par injection dans une machine de moulage par injection, comprenant un outil de moulage par injection présentant deux moitiés. La matière fondue est appliquée, l'outil de moulage par injection étant ouvert, à l'aide d'un dispositif d'alimentation en matière fondue, sur la surface du moule d'une moitié d'outil, puis est ensuite comprimée par assemblage des deux moitiés d'outil, pour parvenir jusque dans toutes les zones de la cavité de l'outil. Afin de réduire, dans le cas de la production de différentes pièces moulées par injection, la complexité technique requise par l'aménagement de canaux de chauffage dans la moitié d'outil, il est prévu de charger la matière fondue sur la surface de moulage avec une plaque de chauffage positionnée au-dessus de ladite surface de moulage. La plaque de chauffage comporte plusieurs buses se présentant sous forme de buses à obturation par pointeau, pilotées en fonction du profil requis pour chacune des moitiés du moule.
PCT/EP1999/008912 1998-11-20 1999-11-20 Procede pour produire des pieces moulees par injection dans une machine de moulage par injection WO2000030824A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT99958085T ATE237445T1 (de) 1998-11-20 1999-11-20 Verfahren zum herstellen von spritzgiessteilen in einer spritzgiessmaschine
EP99958085A EP1131196B1 (fr) 1998-11-20 1999-11-20 Procede pour produire des pieces moulees par injection dans une machine de moulage par injection
DE59905105T DE59905105D1 (de) 1998-11-20 1999-11-20 Verfahren zum herstellen von spritzgiessteilen in einer spritzgiessmaschine
CA002351424A CA2351424A1 (fr) 1998-11-20 1999-11-20 Procede pour produire des pieces moulees par injection dans une machine de moulage par injection
US09/855,260 US6641770B2 (en) 1998-11-20 2001-05-15 Method of and apparatus for producing injection-molded parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853582.1 1998-11-20
DE19853582 1998-11-20

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/855,260 Continuation US6641770B2 (en) 1998-11-20 2001-05-15 Method of and apparatus for producing injection-molded parts

Publications (2)

Publication Number Publication Date
WO2000030824A2 true WO2000030824A2 (fr) 2000-06-02
WO2000030824A3 WO2000030824A3 (fr) 2000-11-02

Family

ID=7888457

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/008912 WO2000030824A2 (fr) 1998-11-20 1999-11-20 Procede pour produire des pieces moulees par injection dans une machine de moulage par injection

Country Status (6)

Country Link
US (1) US6641770B2 (fr)
EP (1) EP1131196B1 (fr)
AT (1) ATE237445T1 (fr)
CA (1) CA2351424A1 (fr)
DE (1) DE59905105D1 (fr)
WO (1) WO2000030824A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1166986A2 (fr) * 2000-06-29 2002-01-02 Alessio S.r.l. Appareil à rendement de production élevée et procédé pour mouler des articles composites
US8173244B2 (en) 2004-01-14 2012-05-08 Franz Josef Summerer Transparent sheet-like shaped plastic part with concealed sprue mark, and process for producing it
DE102015007568A1 (de) 2014-06-16 2015-12-17 Engel Austria Gmbh Verfahren zum Überwachen der Bewegung einer Kolbenzylindereinheit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004016609B3 (de) * 2004-04-03 2005-03-03 Knoch, Kern & Co. Zuführorgan und zugehörige Vorrichtung
EP1589384B1 (fr) * 2004-04-23 2020-01-08 Ricoh Company, Ltd. Récipient de développateur
US9174372B2 (en) 2013-03-15 2015-11-03 Sabic Global Technologies B.V. Shut off nozzle system and methods for making and using the same
CN111497099B (zh) * 2020-04-26 2021-09-14 中铁检验认证中心有限公司 成膜装置和方法

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NL178400C (nl) 1976-09-13 Ici Ltd Inrichting voor het vervormen en het vervolgens spuitgieten van kunststof op een materiaalbaan.
US4279582A (en) 1979-04-02 1981-07-21 Incoe Corporation Method and apparatus for individual control of injection mold shut-off bushings
JP2618432B2 (ja) * 1988-04-14 1997-06-11 株式会社タケヒロ プレス成形における樹脂の投入法
JP2914699B2 (ja) * 1990-02-27 1999-07-05 昭和電工株式会社 二層射出圧縮成形方法および圧縮成形金型
DE4110445C2 (de) * 1991-03-26 1994-10-27 Mannesmann Ag Verfahren und Vorrichtung zur Herstellung dekorbeschichteter Kunststoff-Formteile
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PATENT ABSTRACTS OF JAPAN vol. 016, no. 041 (M-1206), 31. Januar 1992 (1992-01-31) & JP 03 247423 A (SHOWA DENKO KK), 5. November 1991 (1991-11-05) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11, 29. November 1996 (1996-11-29) & JP 08 174582 A (ARACO CORP), 9. Juli 1996 (1996-07-09) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1166986A2 (fr) * 2000-06-29 2002-01-02 Alessio S.r.l. Appareil à rendement de production élevée et procédé pour mouler des articles composites
EP1166986A3 (fr) * 2000-06-29 2003-03-19 Alessio S.r.l. Appareil à rendement de production élevée et procédé pour mouler des articles composites
US8173244B2 (en) 2004-01-14 2012-05-08 Franz Josef Summerer Transparent sheet-like shaped plastic part with concealed sprue mark, and process for producing it
DE102015007568A1 (de) 2014-06-16 2015-12-17 Engel Austria Gmbh Verfahren zum Überwachen der Bewegung einer Kolbenzylindereinheit

Also Published As

Publication number Publication date
ATE237445T1 (de) 2003-05-15
US6641770B2 (en) 2003-11-04
CA2351424A1 (fr) 2000-06-02
DE59905105D1 (de) 2003-05-22
EP1131196A2 (fr) 2001-09-12
EP1131196B1 (fr) 2003-04-16
US20010030385A1 (en) 2001-10-18
WO2000030824A3 (fr) 2000-11-02

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